package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishPageQueryDTO;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }


    /**
     * 启用/禁用员工账号
     * 根据员工id更改员工信息的status
     */
    @Override
    public void updateStatusById(Long id) {
        employeeMapper.updateStatusById(id);
    }
    /**
     * 新增员工
     * @param emp
     */
    @Override
    public void insertEmp(Employee emp) {
        emp.setCreateTime(LocalDateTime.now());
        emp.setUpdateTime(LocalDateTime.now());
        employeeMapper.insertEmp(emp);
    }


    @Override
    /**
     * 分页条件查询
     * @return
     */
    public PageResult pageSelect(DishPageQueryDTO  query) {
        //1.开启分页
        PageHelper.startPage(query.getPage(), query.getPageSize());


        List<Employee> list =employeeMapper.pageSelectRows(query);
        //强转
        Page<Employee> p=(Page<Employee>) list;
        return new PageResult(p.getTotal(),p.getResult());
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @Override
    public Employee getById(Integer id) {
        return employeeMapper.getById(id);
    }

    /**
     * 修改员工信息
     * @param emp
     */
    @Override
    public void updateById(Employee emp) {
        emp.setUpdateTime(LocalDateTime.now());
        employeeMapper.updateById(emp);
    }



}
